Aerosol valve with means to lock same in the open position



J1me 1965 J. J. ANDERSON 3,187,

AEROSOL VALVE WITH MEANS 1'0 LOCK SAME IN THE OPEN POSITION Filed March27. 1963 3 h ets-Sheet 1 June 8, 1965 J. .1. ANDERSON AEROSOL VALVE WITHMEANS TO LOCK SAME IN THE OPEN POSITION 3 Sheets-Sheet 2 Filed March 27,1963 INVENTOR. JZHA/ JAA/DERM June 8, 1965 J. J. ANDERSON AEROSOL VALVEWITH MEANS TO LOCK SAME IN THE OPEN POSITION Fiied March 27, 1963 3heets-Sheet .3

fi Iii INVENTOR. k/b/m J 4/1/0550 United States Patent 3,187,963 AEROSOLVALVE WITH MEANS T0 LOCK SAME IN THE OPEN POSITION John J. Anderson,Kenosha, Wis., assignor to S. C. Johnson & Son, Inc.', Racine, Wis.Filed Mar. 27, 1963,8er. No. 268,260 11 Claims. (Cl. 222-394) Thisinvention relates to pressurized packages, and more particularly, tosuch packages of the class including a container for a fluid compositionand a pressurized propellant for effecting discharge of the fluid fromthe con tainer.

Heretofore, it has been known to utilize a compressed gas or low boilingliquid for dispensing an active composition from a container in the formof an aerosol, for example. Such containers are generally equipped withdispensing assemblies operated by manual push-down buttons which actuatemeans for venting the container contents for so long as the button isheld manually in depressed position against the force of a spring. Uponrelease of the button, the spring serves to close the vent and preventfurther release of the active composition. It will be appreciated thatsuch packages are inherently disadvantageous where it is necessary todischarge malodorous or toxic ingredients, such as insecticides and thelike, for prolonged periods and in confined areas. Thus, according toknown constructions the operator is required to be present in theimmediate vicinity of the discharge and may be adversely afiected bycontact or inhalation of the active composition.

Accordingly, I have conceived by my invention a novel pressurizedpackage of the class described that enables me to discharge the activecomposition in the known manner, or to lock the venting means in open ordischarge position so that prolonged discharges may occur without theneed of continuous manual pressure, and therefore Without .thecontinuous presence of the operator.

The present invention contemplates the provision of a package comprisinga container with fluid composition therein and a propellant fordischarging the composition from the container, and a novel dispensingassembly mounted in the container, preferably at its top. Actually, thedispensing assembly comprises a body, means effecting communicationbetween the interior of the body and the fluid composition which may forexample occupy the lower interior of the container, a discharge controlmember movable relatively to the body and formed with a bore open toatmosphere and adapted to communicate With the interior of the body,means closing the bore when the member is in a first position andunclosing the bore when the member is in a second position relatively tothe body thus to provide a continuous passage tor discharge of the fluidcomposition from the container under the influence of the propellant.Spring means urge the control member towards the first or closedposition, and we provide means effective upon shifting of the controlmember towards the secondpo'sition, as by manual movement thereof, torender the spring means ineffective to urge the control member to thefirst or closed position. In accordance with the present concept, meansare also provided which are effective upon further movement of thecontrol member towards the second position to render the springme-ans'efiective to shift the control means to the first position atwhich the bore is closed- 3 Thus, it will be seen that manual movementof the control member, which may be accomplished bytdepressing a pushbutton, serves at once to open the bore to permit dispensing of theactive ingredient from the containe-r, and also to render the springmeans ineffective to close the bore, while a subsequent movement of thecon trol member in the same direction renders the spring efice fectiveto close the bore. However, I arrange the various parts so that duringthe initial movement the bore is uncovered before the spring isrenedered ineffective, so that for short discharges the control memberneed not be locked in the second or open position.

The body of the dispensing assembly is preferably tubular and thecontrol member is telescopically movable in'relation tothe body, thespring means being also positioned within the body to urge the controlmember to protracted position at which the control member bore, throughwhich discharge takes place, is conveniently closed.

As a p-articular feature of the invention, I position an indexing memberin the tubular body and between the spring and control member so thatthe indexing member reciprocates with the axial telescoping movements ofthe control member. Adjacent surfaces of these members aresoconstruc-ted that upon each movement of the control member toretracted position, the indexing member is causedto index or shiftannularly a selected distance.

In order to assure stability of movement of the control and indexingmembers, I utilize guide means'associated with the interior of the bodyand constructed to engage cooperating parts of the control and indexingmembers during reciprocating movement of these members. Thus, I preferto provide a series of land and grooves on the interior body wall andform the control and indexing members with radially extending fins thatslide respectively in certain of the grooves. Actually, the grooves arealternately deep and shallow, the indexing member fins sliding in thedeep grooves while those on the control member may extend into both thedeep and shallow grooves for sliding movement therein. These parts areso related that during retracting movement the control member may movethe indexing member fins axially out of their respective grooves so thatthe indexing member is free to index or shift annularly as has alreadybeen mentioned. This indexing movement is such that the indexing memberfins are positioned beneath the lowermost or bottom surface formed bythe shallow grooves which then serve as abutments to restrain theindexing member, and thus the control member, against axial movement toprotracted position under the influence of the spring means. The controlmember bore is therefore retained open and in communication with theinterior of the body and with the atmosphere. Subsequent movement of thecontrol member and the indexing member towards retracted position causesfurther indexing of the latter in the manner already mentioned, but thisindexing movement positions the indexing member fins for entry into thedeep grooves, wherefore the control and indexing members may be returnedby the spring means to protracted position.

There has thus been outlined rather broadly the more important featuresof the present invention in order that a detailed description thereofthat follows may be better understood and in order that the presentcontribution to the art may be better appreciated. There are, of course,additional features of the invention that will be described hereafterand which will form the subject of claims appended hereto. Those personsskilled in the art will appreciate that the conception on which thepresent disclosure is based may readily be utilized as the basis fordesigning other structures for carrying out the several It is important,therefore, that the claims be regarded as including such equivalentconstructions as do not depart from the concept and scope of thisinvention.

A specific embodiment of the invention has been chosen for purposes ofillustration and description, and is shown a in the accompanyingdrawings, torming a part of the specification wherein:

FIG. 1 is a perspective view of a package according to the presentinvention and illustrating its manner of use;

FIG. 2 is a vertical sectional view of the dispensingassemblyillustrating the control member in protracted position; 7

FIG. 3 is a view similar to FIG. 2 but illustrating the control memberlocked in retracted position with discharge taking place;

FIG. 4 is an enlarged perspective view of the control member;

FIG. 5 is a cross-sectional view taken along the line 55 of FIG. 2;

FIG. 6 is an enlarged perspective view of the indexing member; a

FIG. 7 is a developed view of the guide means;

FIG. 8 is a view similar to FIG. 7, but illustrating the [relationshipof the indexing member and control member fins to the lands and groovesof the guide means when the dispensing assembly is in protracted orclosed position; I

FIG. 9 is a view similar to FIG. 8, but illustrating the same parts indispensing position and moving towards fully retracted position; and

FIG. 10 is a view similar to FIGS. 8 and 9 but showing the parts lockedin retracted position.

Referring now to the drawings, and more particularly to FIG. 1 thereof,there is shown a pressure package 10 constructed according to thepresent concept and comprising a sealed container 11 of conventionaldesign taldapted to withstand internal pressures required for presentpurposes, such pressures being of the order of 75 p.s.i.g., for example,the top 12 of the container may be domed as shown and arranged tosupport a mounting cup 13 for the dispensing assembly to be laterdescribed. For the present, it is sufiicient to note that the cup has acentral boss 14 and that the assembly includes a control member 15 thatextends through this boss and carries the push button 16 which may beconveniently depressed in the manner illustrated.

Turning now to FIG. 2, the dispensing assembly indicated generally bythe numeral 17 is shown as including a tubular body 19 open at its upperend and formed with a bore 20 atits lower end. This bore 20 is reducedto provide a circular internal shoulder 21, for a purpose later to bedescribed, and the interior of the body is gradually enlarged at 22. Inthe embodiment shown, the upper interior of the body is stepped to formshoulders 23 and 24 against which is positioned an annular guide member25, the structural details of which will be subsequently made clear, butit will now be appreciated that the body may have these structuraldetails formed integral therewith, if desired.

The body is sealed within the cup 13 by crimping the latter around anexternal shoulder of the body as shown at 26, and a resilient sealinggasket 27 is positioned between the top of the body and the top of thecentral boss 14 of the mounting cup 13. I I

The dispensing assembly also includes the control member 15 whichpreferably takes the form of a stem 29 axially bored from the top as at30 and having an enlarged base 31 positioned within the body 19 andserving to close the bottom of the bore 30. A relatively small radialbore 332 communicates with the lower part of the bore 30 and is normallyclosed by the gasket 27, as shown in FIG. 2.

Referring now to FIGS. 2 and 4, it will be seen that the base 31 of thestem 29 is formed with a series of alternate vertical fins and grooves33, 34 respectively, six of each being shown for purposes ofillustration, and with a central recess 35. The lower annular surface 38of the base 31 is serrated with the lower apices of the serrationsoccurring at the center of the fins while the upper apices occur at thecenter, of the grooves, as clearly shown in FIG. 4; and the entireserrated surface is inclined upwardly and inwardly, as best shown inFIG. 2.

I also position within the body 19 an indexing member 36, best shown inFIGS. 2, 3 and 6, and I prefer that this member be formed with anelongated body 37, an enlarged central zone 39 and a series of radiallyextending vertical fins 40 equally spaced circumferentially, the presentembodiment illustrating three such fins. These fins 4b extend beyond theenlarged zone of the body in both directions and the upper ends thereofare inclined as at 41, each in the same annular direction.

It will be recalled that the upper interior of the body 19 has eitherprovision for reception of the guide member 25 or has this member formedintegrally with the body itself. In any case, reference to FIGS. 5 and 7to 10 will demonstrate that this member has a series of spaced, verticalinwardly extending alternate lands 42 and 43, preferably three each innumber. Between each pair of lands is formed a groove; but the groovesare alter nately deep grooves 44 and shallow grooves 45. The lower endsof the lands and shallow grooves projecting inwardly relatively to the.deep grooves, provide outstanding shoulders 46 that are preferablycoplanar and which I prefer to incline, as shown.

Referring again to FIGS. 2 and 3, it will be seen that in assembling theparts that have been described thus far, a helical compression spring 47is positioned within the body 19 to stand upon the shoulder 21. Theguide member 25 is inserted into the upper end of the body in a frictionfit, to bear upon the shoulders 23 and 24 unless, of course, the lands42 and 43 and grooves 44 and 45 are formed integral with the body. Theindexing member 36 is oriented with the inclined surfaces 41 uppermostand is set upon the upper end of the spring 47 with the lower end of thebody 37 extending down within the uppermost coils of the spring and withthe enlarged central'zone 39 bearing against the top coil. The fins 40are disposed each within a deep groove 44 of the guide member. It isimportant here to note that the grooves 45 are not deep enough toaccommodate the fins 40 in the indexing member 36.

Meanwhile, the stem of the control member 15 is inserted through thesealing gasket 27 and the central opening in the boss 14 which is thencrimped around the exterior of the body 19 as already mentioned 'andconveniently sealed to the container dome. It will be observed that therecess .35 of the control member base 31 receives the upper end of theindexing merm ber body 37. Additionally, the fins 33 of the controlmember base are positioned one each in the six grooves 44 and 45 of theguide member 25 for sliding movement'of the control member 15 verticallyrelatively to the guide member.

A push button 16 is frictionally inserted on the upper end of the stem29 which is formed with a sharp annular ridge 48 that serves to preventremoval of the button from the stem. The push button shown has a lateralatomizing bore 49 that communicates with the bore 30 to direct the flowof the discharge in the direction of the arrow 50. Actually, the bore inthe button 16 is formed with a shoulder 49a which acts as a stop for thestem 29, the bore in the button being more or less D- shaped in crosssection at this point.

To permit discharge of the active ingredient from the container, aneduction tube 51 embraces the lower part of the body 19, which may havean annular shoulder 52 for assuring a tight fit, and the tube extendsdown to the region normally occupied by the active composition such asthe lower part of the container, for example.

Discharge may be facilitated by provision of a small bore or vapor tap54 which, if utilized may conveniently be positioned in the body 19above the top of the tube 51 so that portions of the pressurizedpropellant can flow directly from the upper interior'of the containerinto the body during the flow of active composition there- In theposition of the parts shown in FIGS. 2 and 8, the bore 32 near thebottom of the stem 29 is closed by the gasket 27 and the fins =33 and 40of the control and indexing members are disposed in the grooves of theguide member 25 as already described; that is, one of the six fins '33is positioned in each of the six grooves 44 and 45 ('FIG. 5) while oneof the three fins 40 is positioned in each of the three deep grooves 44but below the fins 33. Upon depression of the button 16 the controlmember moves axially downwardly urging the indexing member with itagainst the force of the spring 47. During this axial movement, thecontrol member fins 33 move downwardly in the grooves 44 and 45 of theguide 25 so as to prevent rotary movement of this member, and

i the indexing memberfins 40 slide in the deep drooves 44 below thosefins 33 that are also in the deep grooves.

When the button 16 has been depressed a short distance, the bore '32will move below the gasket 27 and the pressurized propellant in theupper interior of the container will drive the active compositionupwardly through the tube 51 and bore 20 into the body 19, around theindexing member 36 and control member base 31 into lateral bore 32,upwardly through axial bore 30 and through atomizing bore 49 todischarge. If the button 16 is then released, the parts will return totheir normal positions under the force of the spring and discharge willcease.

At this point, it is'im'portant to realize that because of theserrations formed on the lower annular surface .38

of the control member base 31, as Well as the upward and.

inward inclination thereof, as shown in FIGS. 2, 3 and -8, the controlmember bears against the indexing member surfaces 41 with a minimumtotal area of contact thus minmizing the friction between these parts.Additionally, I prefer to form the body 19 and the guide, control andindexing members of a polymer such as nylon or a polyolefin such aspolyethylene or polypropylene. Such materials are at once non-reactivewith the container contents and have a low coeflicient of friction.

When it is desired to have continuous discharge without continuouspressure on the push button, the button is simply depressed a. greaterdistance than is necessary merely to unclose the bore 32 so that theindexing member fins 40 are forced out of their respective groovesi44.At this point, the bearing con-tact between the control member and theinclined surfaces 41 of the indexing member causes the latter to indexor shift annularly to a position beneath the next adjacent shoulders .46formed conjointly by the lowermost edgesof the lands 42 and the nextadjacent shallow grooves 45, and indicated clearly in FIG. 9. Theseshoulders prevent the spring from effecting return of the indexing. andcontrol members to their initial positions so that if manual pressure onthe push button 16 is relieved, the lateral bore 32 remains uncoveredand.discharge continues. Actually, because the shoulders 46 are inclinedand are wider than the surfaces 41, these surfaces slide along theshoulders under the force of the spring until blocked by the nextadjacent lands 43 so that the index and control members rise slightly,but not enough to position the bore 32 opposite the sealing gasket 27.

To return the parts to their original positions, the push button isagain depressed to retract the control mem- 1 her and to shift theindexing member axially against the force of the spring 47 until thefins 40 pass thelowermost portions of the guide member lands 43. Thebearing contact between the control member and the inclined surfaces ofthe indexing member then causes another indexing of the latter to bringthe surfaces 41 into engagement with the inclined lower surfaces of thenext adjacent lands 43 along which they slide under the influence of thespring 47 until they reach the next adjacent deep grooves 44, as shownin FIG. 10. By relieving pressure on the push button, the indexingmember is free to move axially upwardly under the spring force, and inso doing pushes the control member along with it so that the bore 32 isagain closed by the gasket 27 thus preventing further discharge, andcompleting a cycle of operation.

From the foregoing description, it will be seen that I have contributeda pressurized package from which a fluid ingredient may be discharged bya pressurized propellant in known manner by continuous manual pressure;or in which the parts may be locked in discharge position for as long asdesired and then unlocked and returned to normal position all by thesimple depression of a push but-ton.

While the invention has been described in detail with respect to apreferred embodiment thereof, it will be understood by those personsskilled in the art that various modifications may be made withoutdeparting from the scope of the invention and it is intended to coverall such changes and. modifications in the appended claims.

I claim:

1. A pressurized package of the class including a container, a fluidcomposition in the container, propellant means also in the container fordischarging the composition from the container, and a dispensingassembly mounted in the container and comprising a tubular body, meanseffecting communication between the interior of said body and theinterior of the container, a discharge control member movable axiallyrelatively to said body and formed with a bore open to atmosphere andadapted to communicate with the interior of said body, means closingsaid bore when said member is in a first position and unclosing saidbore when said member is in second position relatively to said body thusto provide a continuous passage for discharge of said fluid compositionfrom the container under'the influence of said propellant means, springmeans normally urging said member towards said first position, meansefliective upon movement of said member toward-s said second position torender said spring means ineffective, and means effective upon furthermovement of said member in the same direction to render said springmeans effective.

2. A pressurized package of the class including a coni tainer, a fluidcomposition in the container, propellant means also in the container fordischarging the composition from the container, and a dispensingassembly mounted in the container and comprising a tubular body, meanseffecting communication between the interior of said body and. theinterior of the container, a discharge control member movable axiallyrelatively to said body and formed with a bore open to atmosphere andadapted to communicate with the interior of said body, means closingsaid bore when said member is in a first position and .unclosing saidbore when said member is in the second position relatively to said bodythus to provide a continuous passage for discharge of said fluidcomposition from the container under the influence of said propellantmeans, spring means normally urging said discharge control membertowards said first position, means within said tubular body movable withsaid discharge control member towards said second position, and meanscooperating with said last named means upon movement thereof to saidsecond position to render said spring means ineffective.

3. A pressurized pack-age of the class including a container, a fluidcomposition in the container, propellant means also in the container fordischarging the composi tion from the container, and a dispensingassembly mounted in the container and comprising a tubular body, meanseffecting communication between the interior of said body and thelIliCUlOTOf the container, a discharge control member telescopicallyrelated to said body and formed with a bore open to atmosphere andadapted to communicate with the interior of said body, means closingsaid bore when said member is protracted and unclosing said bore whensaid member is retracted relatively to said body thus to provide acontinuous passage for -discharge of said fluid composition from thecontainer under 3, 1 swap the influence of said propellant means, springmeans normally urging said member towards protracted position, anindexing member movable with said control member, cooperating surfaceson said indexing and control members effective, to' shift said indexingmember a selected annular distance upon each movement of said controlmember towards retracted position, and means within said tubular bodycooperating with said indexing members when said indexing member is in'selected annular positions while retracted to render said spring meansineffective.

4. A pressurized package of the class including a container, a fluidcomposition in the container, propellant means also in the container fordischarging the composition from the container, and a dispensingassembly mounted in the container and comprising a tubular body,

means effecting communication between the interior of said body and theinterior of the container, a discharge control member telescopicallyrelated to said .body and formed with a bore open to atmosphere andadapted to communicate with the interior of said body, means closingsaid bore when said member is protracted and unclosing said bore whensaid member is retracted relatively to said body thus to provide acontinuous passage for dis-' charge of said fluid composition from thecontainer under the influence of said propellant means, spring meansnormally urging said membertowards protracted position, an indexingmember positioned between said spring means and said control member andmovable with the latter, said indexing and control members havingcooperating means effective to shift said indexing member a selectedannular distance upon each movement of said control member towardsretracted position, retaining shoulders project'- ing inwardly of saidtubular body said indexing member having radially extending elementscooperating with said shoulders when said indexing member is inalternate annular positions while retracted to lock said member andspring against movement of said control member to protracted position.

5. A pressurized package of the class including a container, a fluidcomposition in the container, propellant means also in the container fordischarging the composition from the container, and a dispensingassembly mounted in the container and comprising a tubular body having aseries of grooves therein, a discharge control member telescopicallyrelated to said body and formed with abore open to atmosphere andadapted to communicate'with the interior of said body, means closingsaid bore when said member is protracted and unclosing said bore whensaid member is retracted relatively to said body, an indexing membermovable with said control member and formed with radial elementsslidable into and out of said grooves, said indexing and control mem-'bers having cooperating means effective to shift said indexing member aselected annular distance upon each movement thereof towards retractedposition when said elements are out of said grooves; spring means urgingsaid members towards protracted position, means positioned between saidgrooves engaging said radial elements when in selected annular positionsto prevent movement thereof under the influence of said spring towardsprotracted position, and means effecting communication between theinterior of said body and the interior of the container to provide apath for discharge of said fluid composition through said body and borewhen said control member is retracted.

6. A pressurized package of the class including a container, apressurized propellant in the upper interior of the container, a fluidcomposition in the lower interior of the container, and a dispensingassembly mounted in the top of the container and comprising atubularbody having a series ofgrooves therein, a discharge control -membertelescopically related to said body and formed with a bore open toatmosphere and adapted to communicate with the interior of said body andwith an annular serrated undersurface, means closing said bore when saidmember is protracted and unclosing said bore when said member isretracted relatively to said body, an indexing member in said bodyformed with radial elements slidable into and out of said grooves andhaving inclined surfaces engageable wth the serrated surface of saidcontrol member whereby to shift said'indexing member a selected annulardistance upon each movement thereof towards'retracted position when saidelements are out of said grooves, spring means urging said memberstowards protracted position, means positioned between said groovesengaging said radial elements when in selected annular positions toprevent movement thereof under the influence of said spring towardsprotracted position, and means effecting communication between theinterior of said body and the lower interior of the container to providea path for discharge of said fluid composition through said body andbore when said control member is retracted.

7. A pressurized package according to claim 6, and further characterizedin that the serrated surface of said control member is inclined upwardlyand inwardly and said bore is adapted to communicate with the interiorof said body before said indexing member radial elements move out ofsaid grooves.

8. A pressurized package of the class including a container, apressurized propellant in the upper interior of the container, at fluidcomposition in the lower interior of the container, and a dispensingassembly mounted in the top of the container and comprising a tubularbody having a series of grooves therein, said grooves being alternatelydeep and shallow, a discharge control member telescopically related tosaid body and formed with a bore open to atmosphere and adapted tocommunicate with the interior of said body, means on said control membercooperating with said grooves to prevent rotary movement of said member,means closing said bore when said member is protracted and unclosingsaid bore when said member is at least partially retracted relatively tosaid body, an indexing member in said body formed with radial elementsslidable into and out of said deep grooves, said indexing and controlmembers having cooperating surfaces effective to shift said indexingmember a selected annular distance upon each movement thereof towardsretracted position when said elements are out of said grooves, springmeans urging said members towards protracted position, means positionedbetween said grooves engaging said radial elements when in selectedannular positions to prevent movement thereof under the influence ofsaid spring towards protracted position, and means effectingcommunication between the interior of said body and the lower interiorof the container to provide a path for discharge of said fluidcomposition through said body and bore when said control member isretracted.

9. A dispensing assembly of the class described comprising a tubularbody, a discharge control member movable axially relatively to said bodyand formed with a bore open to atmosphere and adapted to communicatewith the interior of said body, means closing said bore when said memberis in a first position and unclosing said bore when said member is in asecond position relatively to said body, spring means normally urgingsaid member towards said first position, means effective upon movementof said member towards said second position to ren- ,mosphere andadapted to communicate with the interior of said body, means closingsaid bore when said member is in protracted position and unclosing saidbore when said member is in retracted position relatively to said body,spring means normally urging said member towards protracted position, anindexing member movable with said control member, cooperating surfaceson said indexing and control members elfective to shift said indexingmember a selected annular distance upon movement of said control membertowards retracted position, said indexing member having meanscooperating with said means projecting inwardly of said body when saidindexing member is in selected annular position while retracted torender said spring means ineffective.

11. A dispensing assembly of the class described comprising a tubularbody having a series of axial grooves therein, said grooves beingalternately deep and shallow, a discharge control member telescopicallyrelated to said body and formed with a bore open to atmosphere andadapted to communicate with the interior of said body, means on saidcontrol member cooperating with said grooves to prevent rotary movementof said member, means closing said bore when said member is protractedand unclosing said bore when said member is at least partially retractedrelatively to said body, an indexing member in said body formed withradial elements slidable into and out of said deep grooves, saidindexing and control members having cooperating surfaces effective toshift said indexing member a selected annular distance upon eachmovement thereof towards retracted position when said elements are outof said grooves, spring means urging said members towards protractedposition, means positioned between said grooves engaging said radialelements when in selected annular positions to prevent movement thereofunder the influenceof said spring towards protracted position, and meanseffecting communication between the interior of said body and a fiuidsource to provide a path for the flow of fluid through said body andbore when said control member is retracted.

References Cited by the Examiner UNITED STATES PATENTS 2,706,660 4/55Johnson et al. 222-394 2,752,066 6/56 Ayres 222-394 2,757,964 8/56 Bothet a1 222394 2,995,278 8/61 Clapp 222-394 3,107,827 10/63 Burmeister222394 RAPHAEL M. LUPO, Primary Examiner.

9. A DISPENSING ASSEMBLY OF THE CLASS DESCRIBED COMPRISING A TUBULARBODY, A DISCHARGE CONTROL MEMBER MOVABLE AXIALLY RELATIVELY TO SAID BODYAND FORMED WITH A BORE OPEN TO ATMOSPHERE AND ADAPTED TO COMMUNICATEWITH THE INTERIOR OF SAID BODY, MEANS CLOSING SAID BORE WHEN SAID MEMBERIS IN A FIRST POSITION AND UNCLOSING SAID BORE WHEN SAID MEMBER IS IN ASECOND POSITION RELATIVELY TO SAID BODY, SPRING MEANS NORMALLY URGINGSAID MEMBER TOWARDS SAID FIRST POSITION, MEANS EFFECTIVE UPON MOVEMENTOF SAID MEMBER TOWARDS SAID SECOND POSITION TO RENDER SAID SPRING MEANSINEFFECTIVE, AND MEANS EFFECTIVE UPON FURTHER MOVEMENT OF SAID MEMBER INTHE SAME DIRECTION TO RENDER SAID SPRING MEANS EFFECTIVE.